iHD: Re-enable the CMRT library.

This CL allows building the iHD driver with the CMRT library as long as
the ihd_cmrtlib USE flag is set. This was originally done in CL:2143233.
It was disabled due to CL:2269975 with the intention of re-enabling it
in its own CL for bisectability.

BUG=b:159825228
TEST=./build_packages --board=dedede with USE=ihd_cmrtlib generates
     /usr/lib64/libigfxcmrt.so

Cq-Depend: chromium:2278617
Change-Id: Ibd49f953e0fca4b66c663f5316f30107504f17be
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2278618
Tested-by: Andres Calderon Jaramillo <andrescj@chromium.org>
Commit-Queue: Andres Calderon Jaramillo <andrescj@chromium.org>
Reviewed-by: Miguel Casas <mcasas@chromium.org>
diff --git a/x11-libs/libva-intel-media-driver/libva-intel-media-driver-20.1.1-r8.ebuild b/x11-libs/libva-intel-media-driver/libva-intel-media-driver-20.1.1-r9.ebuild
similarity index 100%
rename from x11-libs/libva-intel-media-driver/libva-intel-media-driver-20.1.1-r8.ebuild
rename to x11-libs/libva-intel-media-driver/libva-intel-media-driver-20.1.1-r9.ebuild
diff --git a/x11-libs/libva-intel-media-driver/libva-intel-media-driver-20.1.1.ebuild b/x11-libs/libva-intel-media-driver/libva-intel-media-driver-20.1.1.ebuild
index b2d1491..dcf59f9 100644
--- a/x11-libs/libva-intel-media-driver/libva-intel-media-driver-20.1.1.ebuild
+++ b/x11-libs/libva-intel-media-driver/libva-intel-media-driver-20.1.1.ebuild
@@ -13,7 +13,7 @@
 
 LICENSE="MIT BSD"
 SLOT="0"
-IUSE=""
+IUSE="ihd_cmrtlib"
 
 DEPEND=">=media-libs/gmmlib-${PV}
 	>=x11-libs/libva-2.7.1
@@ -34,7 +34,7 @@
 src_configure() {
 	local mycmakeargs=(
 		-DMEDIA_RUN_TEST_SUITE=OFF
-		-DBUILD_CMRTLIB=OFF
+		-DBUILD_CMRTLIB="$(usex ihd_cmrtlib ON OFF)"
 		-DCMAKE_DISABLE_FIND_PACKAGE_X11=TRUE
 	)